604-8g

[Altec Best]

23739 should be a G cone, tho I've a driver with that cone but with a 16 ohm coil.
21184 is generally the cone part for the 515B 416 604E.

If I'm not mistaken there are 2 variants of the 21184 cones (21184-2 & 21184-4) The 21184-4 goes with the 416 and the -2 515 respectively IIRC.

[fatwax]

I have a friend with 904 drivers with same 211 code, so, I'm assuming a 904 cone kit was used? Both drivers sound very similar although the stock one is a little heavier. The sound out of these speakers is absolutely amazing. They definitely do things my 19's can't.

[fatwax]

PS for you Altec fans. 604-8G mounted in Hill Craft cabs.